Slow Cooker French Onion Soup Recipe (2024)

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Published By: Lisa Huff&nbsp|Created On: &nbsp|Updated: | 10 Comments

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Easy Slow Cooker French Onion Soup Recipe, throw it all in your crock pot and forget about it! Not a lot of prep or ingredients but gourmet taste.

Slow Cooker French Onion Soup Recipe (1)

Easy Slow Cooker French Onion Soup recipe for you today! These chilly fall days are perfect for soup, don’t you think? And this French Onion Soup for the most part just involves throwing some ingredients into a slow cooker and it will beready for dinner. Top the soup with some bread or croutons and some Swiss cheese and you have yourself an easy dinner for any day of the week! Itcan also be healthy,low calorie, and low fat (if you use low fat cheese! You can never have too many soup recipes, right? :)

Slow Cooker French Onion Soup Recipe (2)

Slow Cooker French Onion Soup Recipe (3)

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This Easy Slow Cooker French Onion Soup Recipe is really EASY, super EASY. The only hard part is cutting all the onions so you might want to get some goggles out, burn a candle, or do whatever you need to so your eyes don’t burn. I like to just cut a few at a time while getting the other ingredients out.

Once you’ve sliced all your onions, you just throw your onions and the rest of the ingredients into your slow cooker and leave it alone for 6-8 hours. That’s it!

You do need a large (about 6 quarts or larger) slow cooker or crock pot for this French Onion soup recipe but you can easily cut the recipe in half. I like to make a big batch then freeze the leftover soup in small containers. If you need a slow cookerSlow Cooker French Onion Soup Recipe (4),

Or borrow a slow cooker if you don’t have one! Although, if you don’t have a slow cooker, I highly recommend getting one! They definitely come in handy throughout the year and you can get an inexpensive one that will work just fine. You might also like this Slow Cooker Spicy Sausage and Corn Soup whichis another quick and easy crockpot soup.

Slow Cooker French Onion Soup Recipe (5)

When your soup is done, if you’d like you can spoon the soupinto individual oven-proof bowls and top with bread or croutons and Swiss cheese (or your favorite cheese) and place in a warm oven for a few minutes or until the cheese has melted. You can also place the soup in the bowls under your broiler BUT be sure your bowls can withstand that high of heat. You don’t want to clean up cracked bowls and soup all over your oven!

Slow Cooker French Onion Soup Recipe (6)

Hope you enjoy this Easy Slow Cooker French Onion Soup recipe!

Slow Cooker French Onion Soup Recipe (7)

Hope you enjoy! Want some more French Onion inspired recipes? You might like these French Onion Roast Beef Sliders, French Onion Beer Burgers, and this oldie but goodie easy French Dip Sandwiches with deli roast beef.

Easy Slow Cooker French Onion Soup

Easy Slow Cooker French Onion Soup perfect for chilly nights and full of flavor!

Prep Time 10 minutes minutes

Cook Time 8 hours hours

Total Time 8 hours hours 10 minutes minutes

Yield 16 servings (makes about 16 cups of soup, serving - 1 cup)

Calories 79kcal

Author Lisa Huff


Toppings (optional):

  • crusty day old bread or croutons
  • Swiss cheese


  • Place sliced onions into a large slow cooker. Top with beef broth, wine, worcestershire, butter, garlic, and rosemary.

  • Cook on low 6-8 hours or until onions or soft.

  • If desired, spoon into oven safe bowls and top with bread/croutons and Swiss cheese. Place in warm oven to melt cheese.


SNAPPY TIPS: Be sure you slice your onions thinly so that they cook evenly. The recipes makes a lot but you can easily cut the recipe in half or make a big batch and freeze in small containers.

SNAPPY SUBSTITUTIONS: Instead of wine, you can substitute your favorite beer or omit for an alcohol free version. For a healthier version use low fat cheese or omit the cheese and bread.

(Nutrition Info is for 1 cup of soup and does not include toppings.)

Course: Soup

Cuisine: American

Keywords: easy french onion soup, slow cooker soup

Did you try this recipe?Tag @SnappyGourmet or #SnappyGourmet!


Calories: 79kcal | Carbohydrates: 9g | Protein: 3g | Fat: 3g | Saturated Fat: 2g | Trans Fat: 1g | Cholesterol: 6mg | Sodium: 681mg | Potassium: 248mg | Fiber: 1g | Sugar: 4g | Vitamin A: 68IU | Vitamin C: 6mg | Calcium: 33mg | Iron: 1mg

(Nutrition data is provided when available for informational purposes only and calculated using an online nutritional calculator. For the most accurate information please calculate based on specific ingredients and brands you use as well as any changes you made to the recipe. I am not a certified nutritionist or registered dietician and any nutritional information provided should only be used as a general guideline and estimate.)

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Reader Interactions


    Leave a Reply

  1. Brenda says

    I replaced 2 cups of broth with 16 ounces of water and 2 tsp of better than bouillon sautéed onion flavor. I think it adds more depth to the soup. Delicious recipe.


    • Lisa Huff says

      Thanks Brenda!


  2. Mindy says

    We enjoyed this soup. Super easy to make.


  3. Linda says

    Thought it turned out good, thanks.


  4. Pamela says

    I am quite an avid cook. I followed the recipe. I will tell you the truth. It was horrible. I literally poured it down the sink. I had to start my dinner completely over. Luckily I had 2 filet mignons available. Very disappointed….but it happens.


    • Lisa Huff says

      Sorry you didn’t enjoy. If you’d like to email me I’d be happy to help you troubleshoot what went wrong.


  5. Michaela says

    My onions were still not cooked after 9 hours so we had to sauté them


    • Lisa Huff says

      They weren’t cooked in 9 hours? Wow, mine were definitely cooked. Might possibly be if the onions were cut really thick or difference in temperature in the slow cookers.


  6. Tammi @Momma's Meals says

    I can’t wait to try this out Lisa! Thank you for the new date night in recipe inspiration!


    • Lisa Huff says

      Thanks Tammi! Hope you enjoy!


Slow Cooker French Onion Soup Recipe (2024)


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